<template>
    <div class="mui-numbox" data-numbox-min='1'  :data-numbox-max='max'>
        <button class="mui-btn mui-btn-numbox-minus" type="button">-</button>
        <input id="test" class="mui-input-numbox" type="number" value="1" 
            @change="numChange" ref="count" />
        <button class="mui-btn mui-btn-numbox-plus" type="button">+</button>
    </div>
</template>

<script>
import mui from '../../lib/mui/js/mui.min.js'
export default {
    data () {
        return {
            
        }
    },
    mounted() {
        mui('.mui-numbox').numbox()
    },
    methods: {
        numChange() { //购物车数量改变传递给父组件
            this.$emit('getShopCarNum', parseInt(this.$refs.count.value))
        }
    },
    props: ['max'],
    watch: {
        'max': function(newVal, oldVal) {
            mui('.mui-numbox').numbox().setOption('max',newVal)
        }
    },

}
</script>